Half to frank kinsley



(No ModeL) H. R. FRISBIE. OHIME WHISTLE.

No. 472,946. Patented Apr 12, 1892.

"me NORRIS PETERS co.. vno-ro-u-rua, msnmarou, n. c.

UNITED STATES PATENT OFFICE.

HENRY R. FRISBIE, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR. OF ONE HALF TOFRANK KINSLEY, OF SAME PLACE.

CHlME-WHISTLE.

SPECIFICATION forming part Of Letters Patent NO. 472,946, dated April12, 1892.

Application filed $eptember 5, 1891. Serial No. 404,904. (No model.)

T0 all whom it may concern:

Be it known that I, HENRY R. FRISBIE, a citizen of the United States,and a resident of Bridgeport, in the county of Fairtield and State ofConnecticut, have invented certain new and useful Improvements in Chime-WVhistles, of which the following is a specification.

Myinvention relates to chime-whistles; and it consists in dividing thebell into longitudinal compartments of equal lengths and unequal sizes,each compartment or chamber constituting a separate whistle having asounding-orifice proportionate thereto.

The following specification and appended claims will enable others tounderstand, make, and use the improvements referred to. C

In the accompanying drawings, which constitute a part of myspecification, Figure 1 represents an elevation of my constructionmounted upon an ordinary steam-bowl; Fig; 2, a detached view of thebell; Fig. 3, a plan view of the bell. Fig. 4 is a plan view of the bowland a section view of the bell through line y of Fig. 1.

Its construction and operation are as follows:

1 represents the bell or outer shell; 2, the longitudinal partitionsextending the entire length of the hell; 3 3' 3 longitudinal chambersformed by means of said partitions; 4,

threaded stud projecting from the lower end of the bell, which stud fitsa threaded hole in the bowl 5; 6, threaded stud of the upper end of thebell to receive the nut 7. 8 is a cap mounted on the upper end of thebell and held there by nut 7; 9 9 9 upper sounding edge or lips of themouth-pieces; 10, blowingorifice in the bowl 5.

Heretofore in order to produce a variety of tones whistles havebeendivided into thelongitudinal compartments or chambers, and these made ofdifferent lengths to give the tone required. The full-length compartmentwould represent the lowest tone, the next highest by shortening anothercompartment, and so on for each, varying the height to suit the tonerequired.

It is a well-known fact that in proportion as the compartments areshortened for the higher notes the force must be correspondinglyincreased to produce them. Therefore the. deeper tone which is producedat a low pressure is completely drowned in raising the same to sound thehigher notes on the scale. Increasing the pressure for this purposewould drown the lower note, so that in a group constructed as abovedescribed but one full dist-inct tone is sounded on the high or lowpressure, and never more than two at. any point between the extremes,and these will be out of chord.

The construct-ion shown in Fig.1 is pro-- vided with longitudinalchambers extending the full length of the bell, and these (see Figs. 3and 4) are of unequal sizes, the largest 3 representing the lowest tone,3 the next higher, and 8 the highest note. The sounding edges or lips 99' 9 are each placed at a height above the bowl 5, corresponding to thesize and volume of the different chambers to produce the required pitchor tone of each whistle. Thus the deeper tone of-the large chamber 3 hasits sounding edge or lip 9 placed lower than either 9 or 9 whichrepresents the two higher notes of the scale.

The several tones are not produced entirely by means of the varyingheights of the sounding edges or lips, but rather by a combination ofthese with the different-sized chambers. The several chambersbeing allof one length will give to each whistle its full sounding capacity,which is not the case when the different tones are sought to be obtainedby varying the lengths of the chambers, as this choking process willpermit but two at most of the whistles to sound, and these, as beforementioned, will be out of chord. While in my construction the capacityof each chamber is so proportioned with respect to the height of thesounding-lips that under the same pressure all the whistles will soundtogether. The several tones required will be determined as near aspossible by the size or volume of each chamber,-and whatever may belacking in this respect can be remedied by varying the heights of thesounding edges or lips 9 9 9 always keeping in view the importance ofpreserving the proper proportion between the size or volume of thedifferent chambers and the height of their soundingedges 9 9' 9 so thata full, clear, and distinct tone will be produced in each whistle at anyand all pressures. v A change of pressure, while it will raise or lowerthe octave,

will not produce discord or cause one to sound independent of the wholeseries.

Reeds of equal depths but of different areas in cross-section may besounded simultaneously andnnder the same pressure with less liability todiscord than when the different notes are sought to be obtained byshortening the reeds. Therefore I have constructed all my chambers thesame depth, expanding or contracting their volume to produce therequired tone or note in each under the same pressure. This I endeavorto accomplish as near aspossible by means of the different v volumes;but in the construction of the whistle due allowance cannot always bemade for the difference in thickness and quality of the m etal,therefore a slight change may he needed in the height of thesounding-lips to establish the exact proportion necessary for harmonyunder varying pressures.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a chime-Whistle, the bell 1, Whose in-. terior is divided into thelongitudinal sounding-chambers 3 3 3 of unequal or different volumes,but of equal depths, by means of the longitudinal partitions 2,extending the full length of the bell and arranged unequally about theaxis of the same, combined and arranged with the steam-bowl having asteamorifice, as shown.

2. The bell 1, whose interior is divided into the longitudinalsounding-chambers 3 3 3 of unequal or different volumes, but of equaldepths, by means of the longitudinal partitions 2, extending the fulllength of the bell and arranged unequally about the axis of the same,thus forming independent whistles, combined with the steam-bowl and asteam-orifice therein, the height of the sounding lips or edges 9 9 9above said orifice and the volumes of the chamber so proportioned toeach other that a full, clear,and distinct tone will be produced in eachof the separate whistles at any and all pressures, as shown and setforth.

Signed at Bridgeport, in the county of Fairfield and State ofConnecticut, this 25th day of August,-A. D. 1891.

HENRY R. FRISBIE.

WVitnesses:

JOHN OoNNoRs, J OHN B. DUFFY.

